Here is a quick review:
1. Find a CPA offer in the Weight Loss, Make Money or Dating niches
2. Create a 30 second radio ad promoting the CPA offer
3. Find a radio station in a mid size market
4. Run the ad directing the listener to your site for a Free report or just the offer
5. When the listener completes the required action, you get paid.

In reality, a rather unique way to drive traffic to an offer. The real problem here is the cost. The author states that he only ran the ad 5 times at a cost of about $96/time + Domain name = Approximately $500.00 just to do a test.

Poor ad, wrong radio station or wrong time of day = Bye Bye Cash

Could work, but not if you don't have some real money to test it . . .